local+global
single-char-var
unknown-warning
+ broken-var-ref
);
our %warn_ena = @warn_ena_dfl;
sub wrn ($$) {
my ($wk,$m) = @_;
+ our %warn_dedupe;
+ return 0 if $warn_dedupe{$err_file,$.,$wk,$m}++;
wrncore($wk, "${err_file}:$.: $m");
}
local $err_file=$f;
my %srcdirmap = (
- '^' => "\$(top_srcdir)${dir_suffix}",
- '~' => "\$(top_srcdir)",
+ '^' => "\${top_srcdir}${dir_suffix}",
+ '~' => "\${top_srcdir}",
);
my %pfxmap = (
'' => $dir_prefix,
wrn 'single-char-var',
'possibly confusing unbracketed single-char $-expansion';
}
+ elsif (m{^$esc}) {
+ wrn 'broken-var-ref',
+ 'broken $&... expansion; you probably meant &$';
+ }
elsif (m{^\(($esc)?([^()\$]+)\)} ||
m{^\{($esc)?([^{}\$]+)\}}) {
$note_varref->($2,!!$1);
elsif (m{^(?=$caps_re)}) { od $var_prefix }
elsif (s{^\$([A-Za-z]\w+)}{}) {
$note_varref->($1,1);
- od "\$(${var_prefix}$1)";
+ od "\${${var_prefix}$1}";
}
elsif (s{^([~^]?)(?=$lc_re)}{}) { od $pfxmap{$1} }
elsif (s{^_}{}) { od $var_prefix }
elsif (s{^\$\-}{}) { $ddbl=undef; }
elsif (s{^\$\+}{}) { $ddbl=1; }
elsif (s{^\$\(}{}) {
- ddbl_only($&); oud "\$(";
+ ddbl_only($&); oud "\${";
$note_varref->($2,!!$1) if m{^($esc)?([^()\$]+\))};
}
- elsif (s{^\$(\d+)}{}) { ddbl_only($&); oud "\$($1)"; }
+ elsif (s{^\$(\d+)}{}) { ddbl_only($&); oud "\${$1}"; }
elsif (s{^\$\{}{}) {
err 'macro invocation cannot be re-$-doubled' if $ddbl;
od '${eval ${call ';